LTC2637 2 Octal 12-/10-/8-Bit I C V OUT DACs with 10ppm/C Reference FEATURES DESCRIPTION n Integrated Precision Reference: The LTC 2637 is a family of octal 12-, 10-, and 8-bit 2.5V Full-Scale 10ppm/C (LTC2637-L) voltage-output DACs with an integrated, high-accuracy, 4.096V Full-Scale 10ppm/C (LTC2637-H) low-drift 10ppm/C reference in 14-lead DFN and 16-lead n Maximum INL Error: 2.5LSB (LTC2637-12) MSOP packages. It has a rail-to-rail output buffer and is n Low Noise: 0.75mV 0.1Hz to 200kHz guaranteed monotonic. The LTC2637-L has a full-scale P-P n Guaranteed Monotonic Over 40C to 125C output of 2.5V, and operates from a single 2.7V to 5.5V Temperature Range supply. The LTC2637-H has a full-scale output of 4.096V, n Selectable Internal or External Reference and operates from a 4.5V to 5.5V supply. Each DAC can n 2.7V to 5.5V Supply Range (LTC2637-L) also operate with an external reference, which sets the n Ultralow Crosstalk Between DACs (<3nVs) DAC full-scale output to the external reference voltage. n Low Power: 100A per DAC at 3V (LTC2637-L) 2 These DACs communicate via a 2-wire I C-compatible n Power-On-Reset to Zero-Scale/Mid-Scale serial interface. The LTC2637 operates in both the stan- n Double-Buffered Data Latches dard mode (clock rate of 100kHz) and the fast mode (clock n Tiny 14-Lead 4mm 3mm DFN and 16-Lead MSOP rate of 400kHz). The LTC2637 incorporates a power-on Packages reset circuit. Options are available for reset to zero-scale or reset to mid-scale in internal reference mode, or reset APPLICATIONS to mid-scale in external reference mode after power-up. n Mobile Communications n All registered trademarks and trademarks are the property of their respective owners. Protected Process Control and Industrial Automation by U.S. patents, including 5396245, 5859606, 6891433, 6937178, 7414561. n Automatic Test Equipment n Portable Equipment n Automotive n Optical Networking BLOCK DIAGRAM Integral Nonlinearity (LTC2637-LZ12) SWITCH REF INTERNAL REFERENCE V REF GND 2 V = 3V CC V CC INTERNAL REF. 1 V DAC A DAC H V OUTA OUTH V V REF REF 0 V DAC B DAC G OUTB V OUTG V V REF REF 1 V DAC C DAC F OUTC V OUTF 2 V V 0 1024 2048 3072 4095 REF REF CODE 2637 TA01 V DAC D DAC E V OUTD OUTE POWER-ON RESET CAO 2 DECODE I C SCL (CA1) ADDRESS DECODE (CA2) SDA 2 I C INTERFACE 2637 BD ( ) MSOP PACKAGE ONLY Rev D 1 Document Feedback For more information www.analog.com REGISTER REGISTER REGISTER REGISTER REGISTER REGISTER REGISTER REGISTER REGISTER REGISTER REGISTER REGISTER REGISTER REGISTER REGISTER REGISTER INL (LSB)LTC2637 (Notes 1, 2) ABSOLUTE MAXIMUM RATINGS Supply Voltage (V ) ................................... 0.3V to 6V LTC2637I .............................................40C to 85C CC SCL, SDA ..................................................... 0.3V to 6V LTC2637H (Note 3) ............................ 40C to 125C V - V , Maximum Junction Temperature .......................... 150C OUTA OUTH CA0, CA1, CA2 ...................0.3V to Min(V + 0.3V, 6V) Storage Temperature Range .................. 65C to 150C CC REF ...................................0.3V to Min(V + 0.3V, 6V) Lead Temperature (Soldering, 10 sec) CC Operating Temperature Range MS Package ......................................................300C LTC2637C ................................................ 0C to 70C PIN CONFIGURATION TOP VIEW V 1 14 GND TOP VIEW CC V 1 16 GND V 2 13 V OUTA CC OUTH V 2 15 V OUTA OUTH V 3 12 V OUTB OUTG V 3 14 V OUTB OUTG V V 4 15 11 V 4 13 V OUTC OUTF OUTC OUTF V 5 12 V OUTD OUTE V 5 10 V OUTD OUTE CA2 6 11 REF CA0 7 10 CA1 CA0 6 9 REF SCL 8 9 SDA SCL 7 8 SDA MS PACKAGE 16-LEAD (4mm 5mm) PLASTIC MSOP DE PACKAGE 14-LEAD (4mm 3mm) PLASTIC DFN T = 150C, = 110C/W JMAX JA T = 150C, = 37C/W JMAX JA EXPOSED PAD (PIN 15) IS GND, MUST BE SOLDERED TO PCB Rev D 2 For more information www.analog.com